Bruxism can be defined as parafunctional habit of grinding or clenching, which may occur during sleep or wakefulness. To be the complex etiology of bruxism, a multiprofissional approch is needed, including the joint of physiotherapy, pharmacotherapy,occusal therapies and psychological therapies. The purpose of this research is to evaluate the electromyographic signals of the masseter and anterior temporal pre and post therapy with Melissa officinalis L in children with bruxism. Will be evaluated children of both sexes, aged 6 to 10 years. The sample will be divided into two groups, each containing 12 individuals, group I: children with bruxism undergoing theraphy with Melissa officinalis L; group II: children with bruxism undergoing therapphy placebo solution.The groups will be submitted to electromyographic evaluation. The results will be computed and statistical analysis performed by analysis of variance (ANOVA) and Student's t test and nonparametric tests. In all tests are considered 95% of significance (p <0.05).
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